(19)

(11)

EP 1 957 586 A1

(12)

(43) Date of publication: 20.08.2008 Bulletin 2008/34 (21) Application number: 06807794.0 (22) Date of filing: 09.11.2006

(51) International Patent Classification (IPC):  C08L 95/00(2006.01) (86) International application number: PCT/EP2006/068298 (87) International publication number: WO 2007/054541 (18.05.2007 Gazette 2007/20)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR (30) Priority: 10.11.2005 EP 05292400 (71) Applicant: Shell Internationale Research Maatschappij B.V. 2596 HR Den Haag (NL)	(72) Inventors: BOBEE, David F-76650 Petit Couronne (FR) SEIVE, Alain Marcel Bernard F-76650 Petit Couronne (FR) REBUFFATTI, Anne Claire F-76650 Petit Couronne (FR) (74) Representative: Zeestraten, Albertus W. J.  Shell International B.V. Intellectual Property Services P.O. Box 384 2501 CJ The Hague 2501 CJ The Hague (NL)